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Vornado choke coil questions  Rate Topic 
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 Posted: Wed Jul 3rd, 2019 12:04 am
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Keith Pincock
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I'm new on here so be gentle!  I have a couple of fans I am working on.  One is a three speed Vornado.  Before I took it apart it only worked on high.  The above schematic I downloaded from Crescent Industries web site.  The choke coil looks ok but it is confusing how it checks.  From a to b, a to c and b to c, all three measure 14 ohms?  Am I missing something?  From a to c should be double what it is from a to b?  I really don't know what a good coil is suppose to read.  Thanks for any help.
Keith

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 Posted: Wed Jul 3rd, 2019 01:30 pm
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John McComas
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http://www.fancollectors.org/info/mccomas/Generic_3_Speed.jpg

This is a more consolidated approach.

What I have found is that the ohms between high and medium are maybe like 20 ohms.

The ohms between medium and low are less, more like five ohms.

Hope this helps...
Happy Fanning!

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 Posted: Sun Aug 11th, 2019 09:42 pm
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Keith Pincock
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So I unwound the choke coil and measured the wire length and resistance. a to b still checked 14 ohms but b to c now checked 25 ohms. That looked good to me so I bought some magnet wire the same gauge. I rewound the coil with the same length of wire. When I got done it measured only 2 and 3 ohms. I am definitely doing something wrong. I even bought another fan the same that works on all three speeds and it checked 8 and 8. I didn't cut the wires so that might change the numbers. Any ideas would be appreciated.
Keith

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